Shock absorber for motorcycle

Abstract

The present invention relates to the technical field of shock absorbers, and in particular to a shock absorber for motorcycles. The shock absorber for motorcycles comprises a fixed cylinder, a sliding cylinder, a first piston part, a second piston part, a one-way valve, a shock absorbing spring and two elastic telescopic spacer rings. The sliding cylinder is slidably inserted in the fixed cylinder and surrounded by the fixed cylinder to form a sealed chamber; the first piston part is fixedly connected to the fixed cylinder and divides the sealed chamber into a first sub-chamber and a second sub-chamber, and the second sub-chamber is filled with damping oil; the second piston part is fixedly connected to the sliding cylinder and divides the second sub-chamber into a first sub-chamber and a second sub-chamber; the shock absorbing spring is inserted in the first sub-chamber and connected between the sliding cylinder and the first piston part; the two elastic telescopic spacer rings are respectively inserted in the two sub-chambers; the one-way valve is arranged on the second piston part and connects the two sub-chambers, and two groups of one-way valves are respectively arranged on both sides of the elastic telescopic spacer ring and open in opposite directions so that the damping oil forms a reciprocating circulation in the first sub-chamber and the second sub-chamber.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, in particular to a shock absorber for motorcycles. Background Art

[0002] Motorcycle shock absorbers are an important part of the motorcycle suspension system. Their main function is to absorb and cushion the impact and vibration generated by the motorcycle during driving, thereby improving the comfort and safety of riding a motorcycle.

[0003] Motorcycle shock absorbers can be divided into front shock absorbers and rear shock absorbers according to their usage locations. The front shock absorbers are usually composed of springs and hydraulic dampers. The springs are used to buffer the impact force, while the hydraulic dampers are used to suppress the resulting vibrations.

[0004] In the related technology, for example, Chinese patent CN220566488U discloses a stable split motorcycle front shock absorber. When the motorcycle generates vibration during running, the stable split motorcycle front shock absorber pushes the first piston rod to move into the first cylinder. The first piston rod moves downward to drive the second piston rod to move into the second cylinder through the cross plate. At this time, the first shock-absorbing spring and the second shock-absorbing spring absorb a part of the potential energy. When the first piston rod moves downward, the first piston pushes the liquid oil in the first cylinder, so that the liquid oil in the first cylinder enters the oil storage cylinder through the first oil outlet pipe. When the second piston rod moves downward, the second piston pushes the liquid oil in the second cylinder, so that the liquid oil in the second cylinder enters the oil storage cylinder through the second oil outlet pipe, and absorbs the potential energy again. When the hydraulic oil in the first cylinder and the second cylinder enters the oil storage cylinder, the piston plate pushed by the compression spring in the oil storage cylinder is pushed upward to absorb the remaining potential energy.

[0005] Although the above-mentioned stable split motorcycle front shock absorber can achieve shock absorption of the motorcycle, it is found in actual use that since most of the liquid oil is mainly stored in the oil storage cylinder, when the motorcycle vibrates, only part of the liquid oil is switched in the first cylinder, the second cylinder and the oil storage cylinder. On the one hand, it leads to low utilization rate of the liquid oil, which is easy to cause waste, and on the other hand, it may cause uneven energy consumption, thus affecting the shock absorption effect. Summary of the invention

[0006] Based on this, it is necessary to provide a motorcycle shock absorber to address the problems of low liquid oil utilization and poor shock absorption effect in the use of current motorcycle shock absorbers.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A shock absorber for a motorcycle, comprising:

[0009] Fixed cylinder;

[0010] A sliding cylinder is coaxially inserted in the fixed cylinder and can slide axially relative to the fixed cylinder. The sliding cylinder and the fixed cylinder together surround and form a sealed chamber.

[0011] A first piston part is inserted into the sealing chamber and fixedly connected to the fixing cylinder, and divides the sealing chamber into a first sub-chamber and a second sub-chamber which are not connected to each other, and the second sub-chamber is filled with damping oil;

[0012] A second piston part is inserted into the sealing chamber and fixedly connected to the sliding cylinder, and divides the second sub-chamber into a first sub-chamber and a second sub-chamber;

[0013] Two elastic telescopic spacer rings, one of which is inserted into the first sub-cavity, and one end of which is spaced apart from the first piston part to form a damping area with the first piston part, and the other end of which is connected to the second piston part; the other elastic telescopic spacer ring is inserted into the second sub-cavity, and one end of which is connected to the second piston part, and the other end of which is spaced apart from the fixed cylinder to form a damping area with the fixed cylinder;

[0014] a one-way valve, arranged on the second piston portion, and configured to connect the first sub-cavity and the second sub-cavity; the one-way valves are multiple in number and are evenly divided into two groups, the two groups of one-way valves are respectively arranged on both sides of the elastic telescopic spacer ring, and have opposite opening directions;

[0015] The damping spring is inserted into the first sub-chamber and connected between the sliding cylinder and the first piston part.

[0016] Furthermore, the shock absorber for motorcycle also includes a damping adjustment mechanism, which is configured to adjust the damping of the damping area according to the vibration condition of the motorcycle, so that when the vibration intensity of the motorcycle is greater, the damping area is adjusted to have greater damping.

[0017] Furthermore, the damping adjustment mechanism includes two damping adjustment components, and the two damping adjustment components are respectively arranged corresponding to the two damping areas; the damping adjustment component includes a permanent magnet and an electromagnet, and the permanent magnet is inserted into the end of the elastic telescopic spacer ring away from one end of the second piston part; the electromagnet is inserted in the first piston part or the fixed cylinder.

[0018] Furthermore, a first collecting groove is provided at a position where the first piston portion contacts the damping area, and a position where the fixed cylinder contacts the damping area; a second collecting groove is provided at a position where the elastic telescopic spacer ring contacts the damping area, and the second collecting groove and the first collecting groove are provided correspondingly, and are both configured to collect impurities.

[0019] Furthermore, the shock absorber for motorcycle further comprises a debris removal mechanism, and the debris removal mechanism is configured to remove impurities stored in the first collecting tank and the second collecting tank.

[0020] Furthermore, the first collecting tank is configured as an annular structure.

[0021] Furthermore, the shock absorber for motorcycle further comprises an anti-collision portion, wherein the anti-collision portion is inserted into the first sub-cavity and connected between the first piston portion and the second piston portion.

[0022] Furthermore, the anti-collision portion includes an anti-collision spring.

[0023] Furthermore, the opening direction of the one-way valve located on the inner side of the elastic telescopic spacer ring is from the second sub-chamber to the first sub-chamber; and the circumferential side wall of the elastic telescopic spacer ring is arranged as a wave-like structure.

[0024] Furthermore, the wavy structure is composed of a plurality of V-shaped broken line segments.

[0025] The beneficial effects of the present invention are:

[0026] The shock absorber for motorcycle provided by the present invention is installed in such a way that the fixed cylinder is installed on the motorcycle frame and the sliding cylinder is installed on the motorcycle wheel; during use, when the motorcycle travels on a bumpy road section, the wheel vibration synchronously drives the sliding cylinder to move; in the process of the sliding cylinder moving in the direction close to the fixed cylinder, the sliding cylinder, on the one hand, compresses the shock absorbing spring to consume a part of the energy, and on the other hand, synchronously drives the second piston part to move in the direction close to the fixed cylinder; in the process of the second piston part moving in the direction close to the fixed cylinder, the volume of the first sub-chamber increases and the pressure decreases, while the volume of the second sub-chamber decreases and the pressure increases, so that a pressure difference is formed on both sides of the second piston part, and as the second piston part moves, the pressure difference on both sides of the second piston part gradually increases, and when the pressure difference on both sides of the second piston part is greater than the opening value of the one-way valve, on the one hand, the one-way valve whose opening direction is from the second sub-chamber to the first sub-chamber opens, so that the damping oil in the second sub-chamber can pass through the one-way valve and enter the first sub-chamber, and on the other hand, the second sub-chamber is located between the elastic telescopic spacer ring and the one-way valve whose opening direction is from the first sub-chamber to the first sub-chamber. The damping oil on the same side of the one-way valve from the first sub-chamber to the second sub-chamber passes through the damping area and enters the second sub-chamber located on the same side of the elastic telescopic spacer and the opening direction is from the second sub-chamber to the first sub-chamber, so as to consume energy; with the movement of the second piston part, the chamber pressure of the first sub-chamber located on one side of the elastic telescopic spacer increases, thereby causing a pressure difference on both sides of the elastic telescopic spacer. Under the action of the pressure difference, the damping oil on the first sub-chamber located on one side of the elastic telescopic spacer passes through the damping area and enters the first sub-chamber located on the other side of the elastic telescopic spacer, consuming energy and increasing its pressure. When the pressure difference on both sides of the second piston part is greater than the opening value of the one-way valve, the one-way valve from the first sub-chamber to the second sub-chamber opens, so that the damping oil in the first sub-chamber can pass through the one-way valve and enter the second sub-chamber. While the damping oil forms a circulation, each part of the damping oil can flow through all areas, which can improve the utilization rate of the damping oil on the one hand, and make each part of the damping oil have the same usage to avoid waste on the other hand.

[0027] Furthermore, by setting up a damping adjustment mechanism, when the vibration intensity of the motorcycle increases during use, the damping area is adjusted by the damping adjustment mechanism to have greater damping, thereby effectively enhancing the shock absorption effect; when the vibration intensity of the motorcycle decreases, the damping area is adjusted by the damping adjustment mechanism to have smaller damping, thereby avoiding excessive shock absorption, reducing the wear of parts, and extending the service life of the shock absorber.

[0028] Furthermore, by providing the first collecting groove and the second collecting groove, impurities can be collected in time during use, which helps to reduce the impact on the shock absorbing effect of the shock absorber while reducing interference with the fluidity of the damping oil.

[0029] Furthermore, by setting the circumferential side wall of the elastic telescopic spacer ring to a wavy structure, during use, when the damping oil passes over the damping area, the damping oil can impact the inner circumferential walls of the fixed cylinder and the sliding cylinder under the inclined guiding action of the wavy structure, so as to update the oil film on the inner circumferential walls of the fixed cylinder and the sliding cylinder and avoid deposition. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a three-dimensional structure of a shock absorber for a motorcycle provided by an embodiment of the present invention being assembled on a frame;

[0031] Figure 2 A schematic diagram of the exploded parts of a motorcycle shock absorber provided by an embodiment of the present invention, which is assembled on a frame;

[0032] Figure 3 A schematic diagram of the exploded parts of a shock absorber for a motorcycle provided in one embodiment of the present invention;

[0033] Figure 4 A schematic side view of the structure of a shock absorber for a motorcycle provided by an embodiment of the present invention being assembled on a frame;

[0034] Figure 5 for Figure 4 Middle AA section view;

[0035] Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure at B in the middle;

[0036] Figure 7 for Figure 5 A schematic diagram of the partially enlarged structure at C in the middle;

[0037] Figure 8 for Figure 5 The schematic diagram of the local enlarged structure at D in the middle;

[0038] Fig. 9 A schematic diagram of a three-dimensional cross-sectional structure of a shock absorber for a motorcycle provided by an embodiment of the present invention, which is assembled on a second sub-frame;

[0039] Fig.10 for Fig. 9 Schematic diagram of the local enlarged structure at point E in the middle.

[0040] in:

[0041] 1. Fixed cylinder; 11. De-cluttering hole;

[0042] 2. Sliding cylinder;

[0043] 3. first piston part; 301. first mounting groove; 31. first sealing cover;

[0044] 4. second piston portion; 401. mounting hole;

[0045] 5. elastic telescopic spacer ring; 501. magnetic ring; 51. telescopic outer rod; 52. telescopic inner rod; 53. compression spring; 54. second sealing cover; 55. end cover;

[0046] 6. Check valve;

[0047] 7. Damping adjustment component; 71. Permanent magnet; 72. Electromagnet;

[0048] 81. Shock-absorbing spring; 82. Anti-collision spring;

[0049] 91. a first collecting tank; 92. a second collecting tank;

[0050] 10. rack; 101. first sub-rack; 102. second sub-rack. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0052] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] like Figures 1 to 10As shown, a shock absorber for motorcycles provided by one embodiment of the present invention is used for shock absorbing on motorcycles. The shock absorber for motorcycles is configured to include a fixed cylinder 1, a sliding cylinder 2, a first piston part 3, a second piston part 4, a one-way valve 6, a shock absorbing spring 81 and two elastic telescopic spacer rings 5, wherein the sliding cylinder 2 is coaxially inserted in the fixed cylinder 1, and can slide axially relative to the fixed cylinder 1, and the sliding cylinder 2 and the fixed cylinder 1 together surround a sealed chamber; the first piston part 3 is inserted in the sealed chamber, and is fixedly connected to the fixed cylinder 1, and divides the sealed chamber into a first sub-chamber and a second sub-chamber that are not connected to each other, and the second sub-chamber is filled with damping oil; the second piston part 4 is inserted in the sealed chamber, and is fixedly connected to the sliding cylinder 2, and divides the second sub-chamber into a first sub-chamber and a second sub-chamber Two sub-chambers; one of the elastic telescopic spacer rings 5 ​​is inserted in the first sub-chamber, and one end is spaced apart from the first piston part 3 to form a damping area between the first piston part 3, and the other end is connected to the second piston part 4; another elastic telescopic spacer ring 5 is inserted in the second sub-chamber, and one end is connected to the second piston part 4, and the other end is spaced apart from the fixed cylinder 1 to form a damping area between the fixed cylinder 1; a one-way valve 6 is arranged on the second piston part 4, and is configured to connect the first sub-chamber and the second sub-chamber; there are multiple one-way valves 6, and they are evenly divided into two groups, the two groups of one-way valves 6 are respectively arranged on both sides of the elastic telescopic spacer ring 5, and the opening directions are opposite; the shock-absorbing spring 81 is inserted in the first sub-chamber, and connected between the sliding cylinder 2 and the first piston part 3.

[0055] Specifically in this embodiment, in order to facilitate connection with a motorcycle, the shock absorber for motorcycle is configured to also include a frame 10, and the frame 10 is configured to have a first sub-frame 101 and a second sub-frame 102, wherein the first sub-frame 101 is arranged on the motorcycle wheel during installation, and the second sub-frame 102 is arranged on the motorcycle frame during installation.

[0056] like Fig. 9 As shown, the fixed cylinder 1 is configured as a cylindrical structure with an open top, and is fixedly connected to the second sub-frame 102 during installation; the sliding cylinder 2 is configured as a cylindrical structure with an open bottom, and is fixedly connected to the first sub-frame 101 at the top end during installation, and the bottom end is coaxially inserted into the top opening of the fixed cylinder 1; the sealed chamber is formed by the interior of the fixed cylinder 1 and the interior of the sliding cylinder 2.

[0057] like Fig. 9As shown, the first piston part 3 is arranged as a "work" - shaped rotating body structure. During installation, the large end is coaxially inserted into the sliding cylinder 2, and the small end is coaxially and threadedly inserted into the fixed cylinder 1. The partial sealed chamber above the large end of the first piston part 3 is the first sub - chamber, and the partial sealed chamber below the large end of the first piston part 3 is the second sub - chamber. The second piston part 4 is arranged as an annular structure and is coaxially and fixedly inserted into the inner peripheral wall at the bottom of the sliding cylinder 2, and at the same time, it is slidably sleeved on the first piston part 3. The partial second sub - chamber above the second piston part 4 is the first sub - cavity, and the second sub - chamber below the second piston part 4 is the second sub - cavity.

[0058] As Figure 3 and Figure 6 shown, the elastic telescopic spacer ring 5 is arranged to have an inner and an outer annular structure. End caps 55 are provided at both the top and the bottom of the elastic telescopic spacer ring 5. The end caps 55 are arranged as annular structures, and the cross - sectional shape is arranged as a "匚" shape, and the opening faces the elastic telescopic spacer ring 5. To facilitate the elastic telescopic movement of the elastic telescopic spacer ring 5, as Figure 6 、 Figure 7 and Figure 8 shown, a telescopic outer rod 51 is inserted inside the elastic telescopic spacer ring 5. The telescopic outer rod 51 is arranged as a shell - like structure. During installation, it is parallel to the axis of the elastic telescopic spacer ring 5 and vertically penetrates through the second piston part 4. A telescopic inner rod 52 and a compression spring 53 are inserted inside the telescopic outer rod 51. The telescopic inner rod 52 penetrates through the bottom of the telescopic outer rod 51 and extends downward. The compression spring 53 is connected between the telescopic outer rod 51 and the telescopic inner rod 52. Under the action of the compression spring 53, the telescopic inner rod 52 has a tendency to extend out of the telescopic outer rod 51. Among them, for the upper elastic telescopic spacer ring 5, during installation, the upper end cap 55 on it is spaced from the bottom of the large end of the first piston part 3. The lower end cap 55 is fixedly connected to the top of the second piston part 4 and is slidably and sealingly connected to the telescopic outer rod 51. For the lower elastic telescopic spacer ring 5, during installation, the upper end cap 55 on it is fixedly connected to the bottom of the second piston part 4 and is slidably and sealingly connected to the telescopic outer rod 51. The lower end cap 55 is spaced from the inner bottom wall of the fixed cylinder 1.

[0059] It can be understood that a plurality of first support rods can be fixedly connected between the upper end cover 55 on the upper elastic telescopic spacer 5 and the large end bottom of the first piston part 3, and the plurality of first support rods are arranged at intervals, so that the interval between the upper end cover 55 on the upper elastic telescopic spacer 5 and the large end bottom of the first piston part 3 remains unchanged, thereby making the damping of the damping area between the upper end cover 55 on the upper elastic telescopic spacer 5 and the large end bottom of the first piston part 3 exist and remain unchanged; similarly, a plurality of second support rods can be fixedly connected between the lower end cover 55 on the lower elastic telescopic spacer 5 and the inner bottom wall of the fixed cylinder 1, and the plurality of second support rods are arranged at intervals, so that the interval between the lower end cover 55 on the lower elastic telescopic spacer 5 and the inner bottom wall of the fixed cylinder 1 remains unchanged, thereby making the damping of the damping area between the lower end cover 55 on the lower elastic telescopic spacer 5 and the inner bottom wall of the fixed cylinder 1 exist and remain unchanged.

[0060] like Figure 7 As shown, in order to facilitate the installation of the one-way valve 6, a plurality of mounting holes 401 are opened on the top of the second piston part 4, and the plurality of mounting holes 401 are divided into two groups and are respectively located on the inner and outer sides of the elastic telescopic spacer ring 5. The plurality of mounting holes 401 in the same group are evenly arranged along the circumferential direction; the one-way valve 6 is correspondingly inserted into the mounting hole 401 during installation.

[0061] More specifically, in order to improve the stability of the elastic telescopic spacer ring 5 during telescopic movement, a plurality of telescopic outer rods 51 , telescopic inner rods 52 and compression springs 53 may be provided and arranged circumferentially.

[0062] During installation, the first sub-frame 101 is first installed on the motorcycle wheel, and then the second sub-frame 102 is installed on the motorcycle frame.

[0063] During use, when the motorcycle is traveling on a bumpy road, the vibration of the wheel synchronously drives the sliding cylinder 2 to move; in the process of the sliding cylinder 2 moving in the direction close to the fixed cylinder 1, the sliding cylinder 2 compresses the shock-absorbing spring 81 on the one hand to consume part of the energy, and on the other hand synchronously drives the second piston part 4 to move in the direction close to the fixed cylinder 1.

[0064] Take the case where the one-way valve 6 on the inner side of the elastic telescopic spacer ring 5 is conducted from the second sub-chamber to the first sub-chamber, and the one-way valve 6 on the outer side of the elastic telescopic spacer ring 5 is conducted from the first sub-chamber to the second sub-chamber as an example; in the process of the second piston part 4 moving toward the fixed cylinder 1, the volume of the first sub-chamber increases and the pressure decreases, and the volume of the second sub-chamber decreases and the pressure increases, so that a pressure difference is formed on both sides of the second piston part 4; as the second piston part 4 moves, the pressure difference on both sides of the second piston part 4 gradually increases, and when the pressure difference on both sides of the second piston part 4 is greater than that of the one-way valve 6, the one-way valve 6 on the inner side of the elastic telescopic spacer ring 5 opens, so that the damping oil in the second sub-chamber on the inner side of the elastic telescopic spacer ring 5 can pass through the one-way valve 6 into the first sub-chamber on the inner side of the elastic telescopic spacer ring 5. At the same time, since the conduction direction of the one-way valve 6 on the outer side of the elastic telescopic spacer ring 5 is from the first sub-chamber to the second sub-chamber, the one-way valve 6 is in a closed state, so that the damping oil in the second sub-chamber on the outer side of the elastic telescopic spacer ring 5 can only enter the second sub-chamber on the inner side of the elastic telescopic spacer ring 5 through the damping area located below to consume energy.

[0065] As the second piston part 4 moves, the first sub-chamber inside the elastic telescopic spacer ring 5 continuously receives liquid oil, and the pressure gradually increases, causing a pressure difference between the inside and outside of the elastic telescopic spacer ring 5 located above, and the pressure difference gradually increases. Under the action of the pressure difference, the first sub-chamber inside the elastic telescopic spacer ring 5 can only enter the first sub-chamber outside the elastic telescopic spacer ring 5 through the damping area located above, thereby increasing the pressure of the first sub-chamber outside the elastic telescopic spacer ring 5.

[0066] As the second piston part 4 moves, the first sub-chamber outside the elastic telescopic spacer 5 continuously receives liquid oil, and the pressure gradually increases, so that a pressure difference appears at the two ends of the second piston part 4 located on the outside of the elastic telescopic spacer 5, and the pressure difference gradually increases. When the pressure difference between the two ends of the second piston part 4 located on the outside of the elastic telescopic spacer 5 is greater than the opening value of the one-way valve 6, the one-way valve 6 on the outside of the elastic telescopic spacer 5 opens, so that the damping oil in the first sub-chamber outside the elastic telescopic spacer 5 can pass through the one-way valve 6 and enter the second sub-chamber outside the elastic telescopic spacer 5, thereby making the damping oil on the left side of the first piston part 3 form a counterclockwise circulation flow, and the damping oil on the right side of the first piston part 3 form a clockwise circulation flow, so that each part of the damping oil can flow through all areas. On the one hand, it can improve the utilization rate of the damping oil, and on the other hand, it makes each part of the damping oil have the same usage to avoid waste.

[0067] It can be understood that the conduction direction of the one-way valve 6 on the inner side of the elastic telescopic spacer ring 5 can also be set to be from the first sub-chamber to the second sub-chamber, and the conduction direction of the one-way valve 6 on the outer side of the elastic telescopic spacer ring 5 can also be set to be from the second sub-chamber to the first sub-chamber, so that the damping oil on the left side of the first piston part 3 forms a clockwise circulation flow, and the damping oil on the right side of the first piston part 3 forms a counterclockwise circulation flow.

[0068] In some embodiments, in order to improve the applicability of the shock absorber for motorcycles, the shock absorber for motorcycles is configured to also include a damping adjustment mechanism, and the damping adjustment mechanism is configured to be able to adjust the damping of the damping area according to the vibration conditions of the motorcycle, so that when the vibration intensity of the motorcycle is greater, the damping area is adjusted to have greater damping.

[0069] During use, when the vibration intensity of the motorcycle increases, the damping area is adjusted with a damping adjustment mechanism to have a greater damping, thereby effectively enhancing the shock absorption effect; when the vibration intensity of the motorcycle decreases, the damping area is adjusted with a damping adjustment mechanism to have a smaller damping, thereby avoiding excessive shock absorption, reducing the wear of parts, and extending the service life of the shock absorber.

[0070] In a further embodiment, the damping adjustment mechanism is configured to include two damping adjustment components 7, and the two damping adjustment components 7 are respectively arranged corresponding to the two damping areas; the damping adjustment component 7 is configured to include a permanent magnet 71 and an electromagnet 72, and the permanent magnet 71 is inserted in the end of the elastic telescopic spacer ring 5 away from the second piston part 4; the electromagnet 72 is inserted in the first piston part 3 or the fixed cylinder 1.

[0071] Specifically in this embodiment, Figure 6 As shown, the electromagnet 72 of one of the damping adjustment components 7 is inserted into the bottom of the large end of the first piston part 3 during installation; in order to facilitate the installation of the electromagnet 72, as shown in FIG. Figure 3 As shown, a first mounting groove 301 is provided at the top of the large end of the first piston portion 3. The first mounting groove 301 is set as an annular structure and is coaxially arranged with the first piston portion 3. The electromagnet 72 is inserted into the first mounting groove 301 during installation; in order to facilitate closing the first mounting groove 301, a first cover 31 is inserted on the first mounting groove 301. The first cover 31 is set as an annular structure and is set in a T-shape; the permanent magnet 71 of the same damping adjustment component 7 is inserted at the top of the telescopic outer rod 51 during installation; in order to facilitate the installation of the permanent magnet 71, as shown Figure 6 As shown, a second mounting groove is provided at the top of the telescopic outer rod 51, and the second mounting groove is also provided through the end cover 55. The second mounting groove is provided with a square structure, and the permanent magnet 71 is inserted into the second mounting groove during installation. In order to facilitate closing the second mounting groove, a second sealing cover 54 is inserted into the second mounting groove, and the second sealing cover 54 is provided with an inverted "Ω"-shaped structure.

[0072] like Figure 8 As shown, the electromagnet 72 of another damping adjustment component 7 is inserted into the bottom of the fixed cylinder 1 during installation; to facilitate the installation of the electromagnet 72, a first installation groove 301 is provided on the bottom outer end surface of the fixed cylinder 1, and the first installation groove 301 is set as an annular structure and is coaxially arranged with the fixed cylinder 1. The electromagnet 72 is inserted into the first installation groove 301 during installation. To facilitate the closing of the first installation groove 301, a first cover 31 is inserted on the first installation groove 301; the permanent magnet 71 of the same damping adjustment component 7 is inserted into the bottom of the telescopic inner rod 52 during installation; to facilitate the installation of the permanent magnet 71, as shown Figure 8 As shown, a second mounting groove is provided at the bottom of the telescopic inner rod 52, and the second mounting groove also penetrates the end cover 55. The permanent magnet 71 is inserted into the second mounting groove during installation. To facilitate closing the second mounting groove, a second sealing cover 54 is inserted into the second mounting groove.

[0073] It can be understood that, in order to improve the formation stability of the damping area, a plurality of electromagnets 72 and permanent magnets 71 can be provided and evenly arranged along the circumferential direction.

[0074] When in use, all the electromagnets 72 are started, so that repulsive force is generated between the electromagnets 72 and the permanent magnets 71. Since the position of the electromagnets 72 is fixed, the permanent magnets 71 synchronously drive the elastic telescopic spacer ring 5 to move toward the second piston part 4 under the action of the repulsive force to form a damping area.

[0075] When the vibration intensity of the motorcycle increases, the current passed through the electromagnet 72 is reduced, so that the repulsive force between the electromagnet 72 and the permanent magnet 71 is reduced. Under the action of the repulsive force, the permanent magnet 71 synchronously drives the elastic telescopic spacer ring 5 to move away from the second piston part 4 to reduce the damping area, thereby increasing the damping that needs to be overcome when the damping oil passes through the damping area.

[0076] When the vibration intensity of the motorcycle decreases, the current passed through the electromagnet 72 is increased, so that the repulsive force between the electromagnet 72 and the permanent magnet 71 increases. Under the action of the repulsive force, the permanent magnet 71 synchronously drives the elastic telescopic spacer ring 5 to move toward the second piston part 4 to increase the damping area, thereby reducing the damping that the damping oil needs to overcome when passing through the damping area.

[0077] In a further embodiment, a first collecting groove 91 is provided at the contact position between the first piston portion 3 and the damping area, and at the contact position between the fixed cylinder 1 and the damping area; a second collecting groove 92 is provided at the contact position between the elastic telescopic spacer ring 5 and the damping area, and the second collecting groove 92 and the first collecting groove 91 are provided correspondingly, and are both configured to collect impurities.

[0078] Specifically in this embodiment, Figure 6and Figure 8 As shown, the first collecting groove 91 is formed on the large end bottom of the first piston part 3 and the bottom inner end surface of the fixed cylinder 1 respectively; the second collecting groove 92 is formed on an end portion of the second cover 54 away from the permanent magnet 71.

[0079] During use, when the damping oil passes through the damping area, the impurities can move to the first collecting tank 91 or the second collecting tank 92 under the action of gravity or magnetic force for collection.

[0080] In a further embodiment, in order to promptly remove impurities stored in the first collection tank 91 and the second collection tank 92 , the motorcycle shock absorber is configured to also include a debris removal mechanism, which is configured to remove impurities stored in the first collection tank 91 and the second collection tank 92 .

[0081] Specifically in this embodiment, the impurity removal mechanism can be configured to include a negative pressure drain and two impurity removal holes 11, such as Figure 8 As shown, the debris removal hole 11 is opened at the bottom of the fixed cylinder 1, and one end is connected to the first collecting groove 91 on the fixed cylinder 1, and the other end is connected to the outside world; similarly, a debris removal hole 11 is also opened at the large end of the first piston part 3, one end of the debris removal hole 11 is connected to the first collecting groove 91 on the first piston part 3, and the other end is connected to the outside world through a pipeline passing through the first sub-chamber and part of the first sub-frame 101; in order to facilitate the blocking of the debris removal hole 11 and avoid affecting the normal use of the shock absorber, a plug is blocked on one end of the debris removal hole 11 connected to the outside world.

[0082] During use, when the motorcycle stops running, all the electromagnets 72 are started, so that suction is generated between the electromagnets 72 and the permanent magnets 71. Since the position of the electromagnets 72 is fixed, the permanent magnets 71 synchronously drive the elastic telescopic spacer ring 5 to move away from the second piston part 4 under the action of the suction force, so that the second collection groove 92 and the first collection groove 91 are abutted and connected; then the plug is pulled out, and the suction end of the negative pressure drainer is connected to the two impurity removal holes 11 at the same time, and then the negative pressure drainer is started, and the negative pressure drainer synchronously extracts the impurities collected in the second collection groove 92 and the first collection groove 91.

[0083] In other embodiments, in order to improve the collection efficiency of the first collection tank 91, the first collection tank 91 can be configured as an annular structure.

[0084] Specifically in this embodiment, the first collecting groove 91 and the first piston part 3 are coaxially arranged.

[0085] When in use, the annular first collecting groove 91 can not only collect impurities along the circumferential direction, but also collect more impurities.

[0086] In other embodiments, in order to avoid collision between the first piston part 3 and the second piston part 4, the motorcycle shock absorber is configured to also include an anti-collision part, which is inserted into the first sub-cavity and connected between the first piston part 3 and the second piston part 4.

[0087] Specifically in this embodiment, the anti-collision part can be configured to include an anti-collision spring 82, such as Fig. 9 As shown, the anti-collision spring 82 is sleeved on the outside of the elastic telescopic spacer ring 5 and connected between the bottom of the large end of the first piston part 3 and the top of the second piston part 4.

[0088] When the sliding cylinder 2 moves away from the fixed cylinder 1, the second piston part 4 simultaneously moves toward the large end direction close to the first piston part 3 and compresses the anti-collision spring 82. On the one hand, it can consume energy and reduce the vibration intensity. On the other hand, it can prevent the second piston part 4 and the first piston part 3 from having a rigid collision, thereby avoiding affecting the normal use of the shock absorber.

[0089] In other embodiments, the one-way valve 6 located inside the elastic telescopic spacer ring 5 opens from the second sub-chamber to the first sub-chamber; the circumferential side wall of the elastic telescopic spacer ring 5 is configured as a wavy structure.

[0090] Specifically in this embodiment, Figure 6 As shown, the inner and outer layers of the elastic telescopic spacer ring 5 are both configured as a wavy structure.

[0091] More specifically, in order to facilitate the connection between the elastic telescopic spacer ring 5 and the telescopic outer rod 51, as shown in FIG. Fig.10 As shown, the shock absorber for motorcycle is configured to also include multiple magnetic rings 501, which are coaxially and fixedly arranged in the recessed part of the inner layer or outer layer of the elastic telescopic spacer 5 close to the telescopic outer rod 51 during installation, and the magnetic rings 501 and the telescopic outer rod 51 are magnetically connected so that when in use, adjacent magnetic rings 501 repel each other, thereby allowing the elastic telescopic spacer 5 to be evenly compressed and released.

[0092] During use, since the opening direction of the one-way valve 6 located on the inner side of the elastic telescopic spacer ring 5 is from the second sub-chamber to the first sub-chamber, during the movement of the second piston part 4 toward the fixed cylinder 1, as the second piston part 4 moves, the first sub-chamber inside the elastic telescopic spacer ring 5 continuously receives liquid oil, and the pressure gradually increases, so that a pressure difference occurs between the inner and outer sides of the elastic telescopic spacer ring 5 located above, and the pressure difference gradually increases. Under the action of the pressure difference, the first sub-chamber inside the elastic telescopic spacer ring 5 can only enter the first sub-chamber outside the elastic telescopic spacer ring 5 through the damping area located above, and then the damping oil can impact the inner circumferential wall of the fixed cylinder 1 and the sliding cylinder 2 under the inclined guiding action of the wave-like structure, so as to update the oil film on the inner circumferential wall of the fixed cylinder 1 and the sliding cylinder 2 to avoid deposition.

[0093] In a further embodiment, the wavy structure may be configured to be composed of a plurality of V-shaped broken line segments.

[0094] Specifically in this embodiment, the zigzag wave-like structure can more effectively change the flow direction of the damping oil, which is beneficial to increase the impact force of the damping oil on the inner circumferential wall of the fixed cylinder 1 and the sliding cylinder 2 .

[0095] In other embodiments, the wavy structure may also be configured to be composed of a plurality of arc segments.

[0096] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A shock absorber for a motorcycle, characterized in that: The shock absorber for motorcycle comprises: Fixed cylinder; A sliding cylinder is coaxially inserted in the fixed cylinder and can slide axially relative to the fixed cylinder. The sliding cylinder and the fixed cylinder together surround and form a sealed chamber. A first piston part is inserted into the sealing chamber and fixedly connected to the fixing cylinder, and divides the sealing chamber into a first sub-chamber and a second sub-chamber which are not connected to each other, and the second sub-chamber is filled with damping oil; A second piston part is inserted into the sealing chamber and fixedly connected to the sliding cylinder, and divides the second sub-chamber into a first sub-chamber and a second sub-chamber; Two elastic telescopic spacer rings, one of which is inserted into the first sub-cavity, and one end of which is spaced apart from the first piston part to form a damping area with the first piston part, and the other end of which is connected to the second piston part; the other elastic telescopic spacer ring is inserted into the second sub-cavity, and one end of which is connected to the second piston part, and the other end of which is spaced apart from the fixed cylinder to form a damping area with the fixed cylinder; a one-way valve, arranged on the second piston portion, and configured to connect the first sub-cavity and the second sub-cavity; the one-way valves are multiple in number and are evenly divided into two groups, the two groups of one-way valves are respectively arranged on both sides of the elastic telescopic spacer ring, and have opposite opening directions; The damping spring is inserted into the first sub-chamber and connected between the sliding cylinder and the first piston part.

2. The shock absorber for motorcycle according to claim 1, characterized in that: The shock absorber for motorcycle further comprises a damping adjustment mechanism, which is configured to adjust the damping of the damping area according to the vibration condition of the motorcycle, so that the damping area is adjusted to have greater damping when the vibration intensity of the motorcycle is greater.

3. The shock absorber for motorcycle according to claim 2, characterized in that: The damping adjustment mechanism includes two damping adjustment components, and the two damping adjustment components are respectively arranged corresponding to the two damping areas; the damping adjustment component includes a permanent magnet and an electromagnet, and the permanent magnet is inserted at the end of the elastic telescopic spacer ring away from one end of the second piston part; the electromagnet is inserted in the first piston part or the fixed cylinder.

4. The shock absorber for motorcycle according to claim 3, characterized in that: A first collecting groove is provided at a position where the first piston part contacts the damping area, and a position where the fixed cylinder contacts the damping area; a second collecting groove is provided at a position where the elastic telescopic spacer ring contacts the damping area, and the second collecting groove and the first collecting groove are provided correspondingly, and are both configured to collect impurities.

5. The shock absorber for motorcycle according to claim 4, characterized in that: The shock absorber for motorcycle further includes a debris removal mechanism configured to remove the debris stored in the first collecting groove and the second collecting groove.

6. The shock absorber for motorcycle according to claim 4, characterized in that: The first collecting tank is configured as an annular structure.

7. The shock absorber for motorcycle according to claim 1, characterized in that: The shock absorber for motorcycle further comprises an anti-collision part, which is inserted into the first sub-cavity and connected between the first piston part and the second piston part.

8. The shock absorber for motorcycle according to claim 7, characterized in that: The anti-collision portion includes an anti-collision spring.

9. The shock absorber for motorcycle according to claim 1, characterized in that: The one-way valve located inside the elastic telescopic spacer ring opens from the second sub-chamber to the first sub-chamber; the circumferential side wall of the elastic telescopic spacer ring is arranged as a wave-like structure.

10. The shock absorber for motorcycle according to claim 9, characterized in that: The wavy structure is composed of a plurality of V-shaped broken line segments.

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